Statutes, codes, and regulations
Mississippi Administrative Code
Title 39 - UTILITIESPart 3 - RULES AND REGULATIONS GOVERNING PUBLIC UTILITY SERVICESubpart 2 - SPECIAL RULES - ELECTRICITY
Chapter 23 - PERIODIC TEST OF WATT-HOUR AND DEMAND METERS
Rule 39-3-2-23

39 Miss. Code. R. 3-2-23

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Current through October 31, 2024
Rule 39-3-2-23
100. PERIODIC TEST All types of watt-hour meters and demand meters installed upon customer's premises, shall be periodically tested according to schedules below, and in accordance with Rule 18, 19, 21 and 22.

SCHEDULE

For periodic testing of watt-hour meters and curve drawing and integrating demand meters.

Rated Capacity of Meter To be tested at least once in every.....
Alternating Current Meters:
(1)Single Phase: Exceeding 50 amperes 60 months
50 amperes 120 months1
(2) Polyphase: Exceeding 50 kilovolt amps 60 months
50 amperes or less 60 months

SCHEDULE

For periodic testing of lagged-demand meters2
(1) Proportional timing 4 years
(2) Exponential timing 5 years

105. RECORD OF TEST All watt-hour and demand meters in service on and after the effective date of these rules, for which there is on file at the utility's office no record of test made within the period of time specified for that class and rating of meter in schedules above, shall be tested as soon as practicable.
110. FAILURE TO MAKE TEST The Commission may relieve the utility from the requirements under this rule in any particular case in which it is shown that the failure to make the periodic test was due to causes beyond the utility's control.

1 This time may be extended to 180 months provided meters purchased prior to January 1, 1937, are tested at least once in every ninety (90) months.

2 When combined with the kilowatt hour meter the demand meter may, at the option of the utility, be tested at the same time and interval as the associated kilowatt hour meter.

39 Miss. Code. R. 3-2-23